Tip for gas-jets



(No Model.)

.F.P. BUTMAN. TIP FOR GAS JETS.

Patented Dec. 9,- 1890.

BY' h/ wm INVENTOR WITNESSES WM; MKN m govw vw ATTORNEY UNITED STATES PATENT OFFICE.

FRED P. IEUTMAN, OF IIOLBROOK, l\IASSACIlUSET"S.

TIP FOR GAS-J ET'S.

SPECIFICATION forming part of Letters Patent No. 442,100, dated December 9, 1890.

Application filed February 20, 1889. $erial No. 300,583. (No model.)

To all whom it may concern.-

Be it known that I, FRED P. BUTMAN, a citizen of the United States, and a resident of IIolbrook, in the county of Norfolk and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Tips for Gas-Jets, of which the following is a specification.

The object of my invention is to provide a .gas-tip which by reason of the arrangement of the flame-slits is capable of giving a much larger amount of light than is the case with other gas-tips now known or used.

My invention consists in a gas-jet tip the top of which has a solid center for deflecting the gasstream and provided with two or more flame slits arranged wholly or partially around said solid center. One of the most effective arrangements of the slits I have found in practice to be four vertical slits set at equal distances apart around the solid center and approaching quite closely to the center of the top of the tip.

In the accompanying drawings, Figure 1 is a side elevation of the four-slit arrangement. Fig. 2 is a top view. Fig. 3 is a vertical section on line a: as of Fig. 2. Figs. 4 and 5 are modifications.

Same letters indicate similar parts in the different figures.

A is the body of the tip, which is made of metal or composition; B, the top of the tip; 0, the solid center, and I) the flame-slits. These fiame-slits may be of any desired numher more than one, and maybe arranged regularly or irregularly around the solid center, so as to wholly or partially surround the same, and may be either divergent or concentric therewith, as desired. The divergent arrangement is shown in Fig. 2, and the concentric in Figs. 4c and 5.

I It is obvious that many other arrangements of the flame-slits, either as to number, as three, five, eight, &c., or as to direction, may be adopted, if desired, without departing from the spirit of my invention. By thus resisting the pressure of the stream of gas at the center of the tip and compelling it to separate and find exit through the flame-slits provided for that purpose, the intensity of the flame seems to be very largely increased.

A brief description of the method of making my improved gas-tip is this: A piece of sheet metal, preferably brass, is drawn first into the form of a blank tip by gradually elongating the ends and bringing them together in a solid tube with one'end closed and the other open. In the solid or closed end of this blank the desired number of slits is made by a fine saw, which has a thickness equal to the desired width of the slit. If any shavings getinside the tube, they are removed byanysuitable tool and the tip is readyfor use.

I am aware that tips for gas-jets have heretofore been made provided with a number of flame-slits arranged around the center of the top of the tip, said slits consisting of two or more straight slots crossing each other at the top of the tip, which is thus originally left open and each slit being afterward made into two by filling the center with a plug. Such a construction has most, if not all, of the disadvantages which it is the object of my invention to remove-mamely, the tip has to be made of comparatively thick material to me ate enough friction-surface for the plug to resist the pressure of the gas behind it, whereas my tip is preferably made of extremely thin drawn brass. Said plugged tip, as well as all other tips with which I am familiar, has the slits at least as wide, as and in some cases wider, than the single slit of the ordinary lava tip, and hence consumes large quantities of gas and leaves a large blue field in the center of the flame, and also, by reason largely of said width, causes each of the flames to be "cry jagged at its edges, thus making a very unsteady light, while the flames produced by my gas-tip drawn from a single piece of thin metal present a nearly horizontal upper edge without any jagged points, and the light is steady and uniform.

I claim- 1. A tip for gas-jets, having the body and top drawn from a single piece of thin metal and the top of which has a solid center for deflecting the gas-stream, and provided with a number of flame-slits arranged wholly or partially around said solid center, substantially as shown and described.

2. A tip for gas-jets, having the body and i 1 a n top drawn from a single piece of thin metal, RED BU l Witnesses:

J OHN A. BARKER, E. E. BUTMAN.

tel, substantially as and for the specified.

purposes 5 and which consists of a body and top provided with a solid center and a number of vertical slits diverging from said solid cen- 

